/*
 * jQuery Media Plugin for converting elements into rich media content.
 *
 * Examples and documentation at: http://malsup.com/jquery/media/
 * Copyright (c) 2007-2010 M. Alsup
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * @author: M. Alsup
 * @version: 0.99 (05-JUN-2013)
 * @requires jQuery v1.1.2 or later
 * $Id: jquery.media.js 2460 2007-07-23 02:53:15Z malsup $
 *
 * Supported Media Players:
 *  - Flash
 *  - Quicktime
 *  - Real Player
 *  - Silverlight
 *  - Windows Media Player
 *  - iframe
 *
 * Supported Media Formats:
 *   Any types supported by the above players, such as:
 *   Video: asf, avi, flv, mov, mpg, mpeg, mp4, qt, smil, swf, wmv, 3g2, 3gp
 *   Audio: aif, aac, au, gsm, mid, midi, mov, mp3, m4a, snd, rm, wav, wma
 *   Other: bmp, html, pdf, psd, qif, qtif, qti, tif, tiff, xaml
 *
 * Thanks to Mark Hicken and Brent Pedersen for helping me debug this on the Mac!
 * Thanks to Dan Rossi for numerous bug reports and code bits!
 * Thanks to Skye Giordano for several great suggestions!
 * Thanks to Richard Connamacher for excellent improvements to the non-IE behavior!
 */
/*global SWFObject alert Sys */
/*jshint forin:false */
;(function($) {
"use strict"; 

var mode = document.documentMode || 0;
var msie = /MSIE/.test(navigator.userAgent);
var lameIE = msie && (/MSIE (6|7|8)\.0/.test(navigator.userAgent) || mode < 9);

/**
 * Chainable method for converting elements into rich media.
 *
 * @param options
 * @param callback fn invoked for each matched element before conversion
 * @param callback fn invoked for each matched element after conversion
 */
$.fn.media = function(options, f1, f2) {
  if (options == 'undo') {
    return this.each(function() {
      var $this = $(this);
      var html = $this.data('media.origHTML');
      if (html)
        $this.replaceWith(html);
    });
  }
  
  return this.each(function() {
    if (typeof options == 'function') {
      f2 = f1;
      f1 = options;
      options = {};
    }
    var o = getSettings(this, options);
    // pre-conversion callback, passes original element and fully populated options
    if (typeof f1 == 'function') f1(this, o);

    var r = getTypesRegExp();
    var m = r.exec(o.src.toLowerCase()) || [''];
    var fn;

    if (o.type)
      m[0] = o.type;
    else
      m.shift();

    for (var i=0; i < m.length; i++) {
      fn = m[i].toLowerCase();
      if (isDigit(fn[0])) fn = 'fn' + fn; // fns can't begin with numbers
      if (!$.fn.media[fn])
        continue;  // unrecognized media type
      // normalize autoplay settings
      var player = $.fn.media[fn+'_player'];
      if (!o.params) o.params = {};
      if (player) {
        var num = player.autoplayAttr == 'autostart';
        o.params[player.autoplayAttr || 'autoplay'] = num ? (o.autoplay ? 1 : 0) : o.autoplay ? true : false;
      }
      var $div = $.fn.media[fn](this, o);

      $div.css('backgroundColor', o.bgColor).width(o.width);
      
      if (o.canUndo) {
        var $temp = $('<div></div>').append(this);
        $div.data('media.origHTML', $temp.html()); // store original markup
      }
      
      // post-conversion callback, passes original element, new div element and fully populated options
      if (typeof f2 == 'function') f2(this, $div[0], o, player.name);
      break;
    }
  });
};

/**
 * Non-chainable method for adding or changing file format / player mapping
 * @name mapFormat
 * @param String format File format extension (ie: mov, wav, mp3)
 * @param String player Player name to use for the format (one of: flash, quicktime, realplayer, winmedia, silverlight or iframe
 */
$.fn.media.mapFormat = function(format, player) {
  if (!format || !player || !$.fn.media.defaults.players[player]) return; // invalid
  format = format.toLowerCase();
  if (isDigit(format[0])) format = 'fn' + format;
  $.fn.media[format] = $.fn.media[player];
  $.fn.media[format+'_player'] = $.fn.media.defaults.players[player];
};

// global defautls; override as needed
$.fn.media.defaults = {
  standards:  true,       // use object tags only (no embeds for non-IE browsers)
  canUndo:    true,       // tells plugin to store the original markup so it can be reverted via: $(sel).mediaUndo()
  width:    400,
  height:   400,
  autoplay: 0,      // normalized cross-player setting
  bgColor:  '#ffffff',  // background color
  params:   { wmode: 'transparent'},  // added to object element as param elements; added to embed element as attrs
  attrs:    {},     // added to object and embed elements as attrs
  flvKeyName: 'file',   // key used for object src param (thanks to Andrea Ercolino)
  flashvars:  {},     // added to flash content as flashvars param/attr
  flashVersion: '7',  // required flash version
  expressInstaller: null, // src for express installer

  // default flash video and mp3 player (@see: http://jeroenwijering.com/?item=Flash_Media_Player)
  flvPlayer:   'mediaplayer.swf',
  mp3Player:   'mediaplayer.swf',

  // @see http://msdn2.microsoft.com/en-us/library/bb412401.aspx
  silverlight: {
    inplaceInstallPrompt: 'true', // display in-place install prompt?
    isWindowless:     'true', // windowless mode (false for wrapping markup)
    framerate:        '24',   // maximum framerate
    version:        '0.9',  // Silverlight version
    onError:        null,   // onError callback
    onLoad:           null,   // onLoad callback
    initParams:       null,   // object init params
    userContext:      null    // callback arg passed to the load callback
  }
};

// Media Players; think twice before overriding
$.fn.media.defaults.players = {
  flash: {
    name:    'flash',
    title:     'Flash',
    types:     'flv,mp3,swf',
    mimetype:  'application/x-shockwave-flash',
    pluginspage: 'http://www.adobe.com/go/getflashplayer',
    ieAttrs: {
      classid:  'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000',
      type:   'application/x-oleobject',
      //codebase: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + $.fn.media.defaults.flashVersion
    }
  },
  quicktime: {
    name:    'quicktime',
    title:     'QuickTime',
    mimetype:  'video/quicktime',
    //pluginspage: 'http://www.apple.com/quicktime/download/',
    types:     'aif,aiff,aac,au,bmp,gsm,mov,mid,midi,mpg,mpeg,mp4,m4a,psd,qt,qtif,qif,qti,snd,tif,tiff,wav,3g2,3gp',
    ieAttrs: {
      classid:  'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B',
      codebase: 'http://www.apple.com/qtactivex/qtplugin.cab'
    }
  },
  realplayer: {
    name:     'real',
    title:      'RealPlayer',
    types:      'ra,ram,rm,rpm,rv,smi,smil',
    mimetype:   'audio/x-pn-realaudio-plugin',
    pluginspage:  'http://www.real.com/player/',
    autoplayAttr: 'autostart',
    ieAttrs: {
      classid: 'clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA'
    }
  },
  winmedia: {
    name:     'winmedia',
    title:      'Windows Media',
    types:      'asx,asf,avi,wma,wmv',
    mimetype:   isFirefoxWMPPluginInstalled() ? 'application/x-ms-wmp' : 'application/x-mplayer2',
    pluginspage:  'http://www.microsoft.com/Windows/MediaPlayer/',
    autoplayAttr: 'autostart',
    oUrl:     'url',
    ieAttrs: {
      classid:  'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6',
      type:   'application/x-oleobject'
    }
  },
  // special cases
  img: {
    name:  'img',
    title: 'Image',
    types: 'gif,png,jpg'
  },
  iframe: {
    name:  'iframe',
    types: 'html,pdf'
  },
  silverlight: {
    name:  'silverlight',
    types: 'xaml'
  }
};

//
//  everything below here is private
//


// detection script for FF WMP plugin (http://www.therossman.org/experiments/wmp_play.html)
// (hat tip to Mark Ross for this script)
function isFirefoxWMPPluginInstalled() {
  var plugs = navigator.plugins || [];
  for (var i = 0; i < plugs.length; i++) {
    var plugin = plugs[i];
    if (plugin['filename'] == 'np-mswmp.dll')
      return true;
  }
  return false;
}

var counter = 1;

for (var player in $.fn.media.defaults.players) {
  var types = $.fn.media.defaults.players[player].types;
  $.each(types.split(','), function(i,o) {
    if (isDigit(o[0])) o = 'fn' + o;
    $.fn.media[o] = $.fn.media[player] = getGenerator(player);
    $.fn.media[o+'_player'] = $.fn.media.defaults.players[player];
  });
}

function getTypesRegExp() {
  var types = '';
  for (var player in $.fn.media.defaults.players) {
    if (types.length) types += ',';
    types += $.fn.media.defaults.players[player].types;
  }
  return new RegExp('\\.(' + types.replace(/,/ig,'|') + ')\\b');
}

function getGenerator(player) {
  return function(el, options) {
    return generate(el, options, player);
  };
}

function isDigit(c) {
  return '0123456789'.indexOf(c) > -1;
}

// flatten all possible options: global defaults, meta, option obj
function getSettings(el, options) {
  options = options || {};
  var a, n;
  var $el = $(el);
  var cls = el.className || '';
  // support metadata plugin (v1.0 and v2.0)
  var meta = $.metadata ? $el.metadata() : $.meta ? $el.data() : {};
  meta = meta || {};
  var w = meta.width  || parseInt(((cls.match(/\bw:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bwidth:(\d+)/)||[])[1]||0),10);
  var h = meta.height || parseInt(((cls.match(/\bh:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bheight:(\d+)/)||[])[1]||0),10);

  if (w) meta.width = w;
  if (h) meta.height = h;
  if (cls) meta.cls = cls;
  
  // crank html5 style data attributes
  var dataName = 'data-';
    for (var i=0; i < el.attributes.length; i++) {
        a = el.attributes[i], n = $.trim(a.name);
        var index = n.indexOf(dataName);
        if (index === 0) {
      n = n.substring(dataName.length);
      meta[n] = a.value;
        }
    }

  a = $.fn.media.defaults;
  var b = options;
  var c = meta;

  var p = { params: { bgColor: options.bgColor || $.fn.media.defaults.bgColor } };
  var opts = $.extend({}, a, b, c);
  $.each(['attrs','params','flashvars','silverlight'], function(i,o) {
    opts[o] = $.extend({}, p[o] || {}, a[o] || {}, b[o] || {}, c[o] || {});
  });

  if (typeof opts.caption == 'undefined') opts.caption = $el.text();

  // make sure we have a source!
  opts.src = opts.src || $el.attr('href') || $el.attr('src') || 'unknown';
  return opts;
}

//
//  Flash Player
//

// generate flash using SWFObject library if possible
$.fn.media.swf = function(el, opts) {
  var f, p;
  if (!window.SWFObject && !window.swfobject) {
    // roll our own
    if (opts.flashvars) {
      var a = [];
      for (f in opts.flashvars)
        a.push(f + '=' + opts.flashvars[f]);
      if (!opts.params) opts.params = {};
      opts.params.flashvars = a.join('&');
    }
    return generate(el, opts, 'flash');
  }

  var id = el.id ? (' id="'+el.id+'"') : '';
  var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
  var $div = $('<div' + id + cls + '>');

  // swfobject v2+
  if (window.swfobject) {
    $(el).after($div).appendTo($div);
    if (!el.id) el.id = 'movie_player_' + counter++;

    // replace el with swfobject content
    window.swfobject.embedSWF(opts.src, el.id, opts.width, opts.height, opts.flashVersion,
      opts.expressInstaller, opts.flashvars, opts.params, opts.attrs);
  }
  // swfobject < v2
  else {
    $(el).after($div).remove();
    var so = new SWFObject(opts.src, 'movie_player_' + counter++, opts.width, opts.height, opts.flashVersion, opts.bgColor);
    if (opts.expressInstaller) so.useExpressInstall(opts.expressInstaller);

    for (p in opts.params)
      if (p != 'bgColor') so.addParam(p, opts.params[p]);
    for (f in opts.flashvars)
      so.addVariable(f, opts.flashvars[f]);
    so.write($div[0]);
  }

  if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
  return $div;
};

// map flv and mp3 files to the swf player by default
$.fn.media.flv = $.fn.media.mp3 = function(el, opts) {
  var src = opts.src;
  var player = /\.mp3\b/i.test(src) ? opts.mp3Player : opts.flvPlayer;
  var key = opts.flvKeyName;
  src = encodeURIComponent(src);
  opts.src = player;
  opts.src = opts.src + '?'+key+'=' + (src);
  var srcObj = {};
  srcObj[key] = src;
  opts.flashvars = $.extend({}, srcObj, opts.flashvars );
  return $.fn.media.swf(el, opts);
};

//
//  Silverlight
//
$.fn.media.xaml = function(el, opts) {
  if (!window.Sys || !window.Sys.Silverlight) {
    if ($.fn.media.xaml.warning) return;
    $.fn.media.xaml.warning = 1;
    alert('You must include the Silverlight.js script.');
    return;
  }

  var props = {
    width: opts.width,
    height: opts.height,
    background: opts.bgColor,
    inplaceInstallPrompt: opts.silverlight.inplaceInstallPrompt,
    isWindowless: opts.silverlight.isWindowless,
    framerate: opts.silverlight.framerate,
    version: opts.silverlight.version
  };
  var events = {
    onError: opts.silverlight.onError,
    onLoad: opts.silverlight.onLoad
  };

  var id1 = el.id ? (' id="'+el.id+'"') : '';
  var id2 = opts.id || 'AG' + counter++;
  // convert element to div
  var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
  var $div = $('<div' + id1 + cls + '>');
  $(el).after($div).remove();

  Sys.Silverlight.createObjectEx({
    source: opts.src,
    initParams: opts.silverlight.initParams,
    userContext: opts.silverlight.userContext,
    id: id2,
    parentElement: $div[0],
    properties: props,
    events: events
  });

  if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
  return $div;
};

//
// generate object/embed markup
//
function generate(el, opts, player) {
  var $el = $(el);
  var o = $.fn.media.defaults.players[player];
  var a, key, v;

  if (player == 'iframe') {
    o = $('<iframe' + ' width="' + opts.width + '" height="' + opts.height + '" >');
    o.attr('src', opts.src);
    o.css('backgroundColor', o.bgColor);
  }
  else if (player == 'img') {
    o = $('<img>');
    o.attr('src', opts.src);
    if (opts.width)
      o.attr('width', opts.width);
    if (opts.height)
      o.attr('height', opts.height);
    o.css('backgroundColor', o.bgColor);
  }
  else if (lameIE) {
    a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];
    for (key in opts.attrs)
      a.push(key + '="'+opts.attrs[key]+'" ');
    for (key in o.ieAttrs || {}) {
      v = o.ieAttrs[key];
      if (key == 'codebase' && window.location.protocol == 'https:')
        v = v.replace('http','https');
      a.push(key + '="'+v+'" ');
    }
    a.push('></ob'+'ject'+'>');
    var p = ['<param name="' + (o.oUrl || 'src') +'" value="' + opts.src + '">'];
    for (key in opts.params)
      p.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
    o = document.createElement(a.join(''));
    for (var i=0; i < p.length; i++)
      o.appendChild(document.createElement(p[i]));
  }
  else if (opts.standards) {
    // Rewritten to be standards compliant by Richard Connamacher
    a = ['<object type="' + o.mimetype +'" width="' + opts.width + '" height="' + opts.height +'"'];
    if (opts.src) a.push(' data="' + opts.src + '" ');
    if (msie) {
      for (key in o.ieAttrs || {}) {
        v = o.ieAttrs[key];
        if (key == 'codebase' && window.location.protocol == 'https:')
          v = v.replace('http','https');
        a.push(key + '="'+v+'" ');
      }
    }
    a.push('>');
    a.push('<param name="' + (o.oUrl || 'src') +'" value="' + opts.src + '">');
    for (key in opts.params) {
      if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
        continue;
      a.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
    }
    // Alternate HTML
    //a.push('<div><p><strong>'+o.title+' Required</strong></p><p>'+o.title+' is required to view this media. <a href="'+o.pluginspage+'">Download Here</a>.</p></div>');
    a.push('</ob'+'ject'+'>');
  }
   else {
          a = ['<embed width="' + opts.width + '" height="' + opts.height + '" style="display:block"'];
          if (opts.src) a.push(' src="' + opts.src + '" ');
          for (key in opts.attrs)
              a.push(key + '="'+opts.attrs[key]+'" ');
          for (key in o.eAttrs || {})
              a.push(key + '="'+o.eAttrs[key]+'" ');
          for (key in opts.params) {
              if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
          continue;
              a.push(key + '="'+opts.params[key]+'" ');
          }
          a.push('></em'+'bed'+'>');
      } 
  // convert element to div
  var id = el.id ? (' id="'+el.id+'"') : '';
  var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
  var $div = $('<div' + id + cls + '>');
  $el.after($div).remove();
  if (lameIE || player == 'iframe' || player == 'img')
    $div.append(o);
  else
    $div.html(a.join(''));
  
  if (opts.caption) 
    $('<div>').appendTo($div).html(opts.caption);
  return $div;
}


})(jQuery);